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首先在PAYJS申请到商户号和密钥，
然后实现源码如下：
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="UTF-8">
<title>Title</title>
<script src="https://ajax.aspnetcdn.com/ajax/jQuery/jquery-3.2.1.js"></script>
<style type="text/css">
button {width: 150px;height: 50px;bottom: 20px;left: 40px;}
</style>
</head>
<body>
<button class="btn_2" id="btn" />支付</button>
<script type="text/javascript">
$("#btn").click(function() {
var out_trade_no = new Date().getTime()+'aaaaaaa';
$.ajax({
type: "GET",
dataType: "json",
url: "http://www.wenjuanceshi.online/index.php?out_trade_no="+out_trade_no, //url
// url: "http://localhost:8010/index.php", //url
success: function(res) {
console.log('1111:',res);
},
error: function(e) {
console.log('2222:',e);
var sign =e.responseText.replace(/\s+/g,"");
pay(sign,out_trade_no)
//密钥
}
});
});
//¬ify_url=http://www.wenjuanceshi.online/notify_url.html&callback_url=http://www.wenjuanceshi.online/callback_url.html
function pay(sign,out_trade_no){
console.log('sign:',sign)
window.location.href="https://payjs.cn/api/cashier?mchid=1515476391&total_fee=10&out_trade_no="+out_trade_no+"&sign="+sign;
}
</script>
</body>
</html>
<?php
header("Content-Type:text/html;charset=utf8");
header("Access-Control-Allow-Origin: *"); //解决跨域
header('Access-Control-Allow-Methods:GET');// 响应类型
header('Access-Control-Allow-Headers:*'); // 响应头设置
@mysql_query("SET NAMES utf8");//解决中文乱码问题
//error_reporting(0);
$out_trade_no = $_GET['out_trade_no'];
$mchid = '你的商户号';
$key = '你的密钥';
$data =[
'mchid'=>$mchid,
'body'=>'我是一个测试订单标题',
'total_fee'=>1,
'out_trade_no'=>$out_trade_no,
];
$data['sign']=sign($data,$key);
$url='https://payjs.cn/api/cashier?'.http_build_query($data);
echo $url;
function sign($data,$key){
array_filter($data);
ksort($data);
return strtoupper(md5(urldecode(http_build_query($data).'&key='.$key)));
}
?>